FAS 316 Marine Grade Stainless Steel Cup Washers 100pcs CounterSunk

Description

Product Overview

Our 100‑piece pack of cup washers is manufactured from 316 marine‑grade stainless steel, a material renowned for its superior resistance to rust, pitting, and chloride‑induced corrosion. The washers feature a precision‑engineered counter‑sunk profile that sits flush against the surface of a bolt or screw, eliminating protrusion and providing a clean, professional appearance in any assembly. Each washer measures a standard inner diameter to accommodate common fastener sizes, while the outer diameter offers a broad bearing surface that distributes load evenly, reducing stress on the underlying material. The product weight of just 4 ounces per pack makes it lightweight for bulk shipping, yet the robust construction ensures durability even in harsh environments such as marine vessels, chemical processing plants, and outdoor equipment. Quality control is a cornerstone of our production process; every washer undergoes rigorous inspection to verify dimensional accuracy, surface finish, and material integrity before being sealed in resealable bags for protection against moisture and contamination. This meticulous approach guarantees that you receive a consistent, high‑performance component that meets the exacting standards of professional engineers and maintenance crews.

Usage

These cup washers are ideally suited for a wide range of applications where corrosion resistance and a low‑profile finish are essential. In marine settings, they protect hull fittings, deck hardware, and pump assemblies from saltwater exposure, extending the service life of critical components. In industrial environments, they are used in machinery housings, electrical enclosures, and pipe flanges where exposure to chemicals or moisture could otherwise compromise fastener integrity. The counter‑sunk design makes them perfect for aerospace and automotive assemblies where aerodynamic smoothness or aerodynamic drag reduction is required. Installation is straightforward: simply place the washer onto the fastener after the bolt head or nut, then tighten to the recommended torque. The washers’ flat, smooth surface prevents damage to adjacent parts and helps maintain a seal when used with gaskets or O‑rings. Because they are supplied in resealable bags, you can easily dispense the exact quantity needed for a job, reducing waste and simplifying inventory management for maintenance teams, contractors, and DIY enthusiasts alike.

Why Choose Us

Choosing our 316 stainless steel cup washers means selecting a product that combines material excellence, precise engineering, and reliable supply chain practices. Our washers are produced in a lot‑controlled environment, ensuring batch consistency and traceability for quality‑sensitive projects. Each lot undergoes a shipping audit to verify that packaging integrity is maintained throughout transit, protecting the washers from moisture ingress that could compromise their corrosion‑resistant properties. The resealable bags not only keep the washers dry but also allow for easy access during on‑site installation, reducing handling time and minimizing the risk of contamination. Our commitment to customer satisfaction extends beyond the product itself; we provide responsive technical support, detailed installation guidelines, and a clear return policy should any issues arise. With a proven track record reflected in a 5‑star rating from eight verified customers, you can trust that our cup washers will perform reliably in the most demanding conditions, delivering value and peace of mind for engineers, procurement officers, and end‑users.

Key Features

• Premium 316 marine‑grade stainless steel ensures long‑term corrosion resistance in salty or chemical environments.
• Counter‑sunk design provides a flush, low‑profile finish that prevents snagging and improves aesthetic appeal.
• Broad bearing surface distributes load evenly, reducing stress on fasteners and extending component life.
• QC inspected and packaged in resealable bags for moisture protection and convenient on‑site dispensing.
• Responsive customer support and technical assistance available for installation guidance and after‑sales service.

FAQ

What sizes of fasteners are compatible with these cup washers?

The washers are designed with a standard inner diameter that fits common bolt and screw sizes ranging from #4 to 1/2 inch. For specific applications, refer to the product dimensions provided in the technical data sheet to ensure proper fit.

Can these washers be used in high‑temperature environments?

Yes, 316 stainless steel retains its mechanical properties at elevated temperatures up to approximately 800°F (427°C). However, for continuous exposure above 500°F (260°C), it is advisable to verify compatibility with the specific system requirements.

How do I ensure the washers remain corrosion‑free during storage?

Keep the resealable bags sealed when not in use and store them in a dry, temperature‑controlled environment. The packaging is designed to prevent moisture ingress, but avoiding prolonged exposure to extreme humidity will further protect the washers.

Are these washers suitable for use with gaskets or O‑rings?

Absolutely. The flat, smooth surface of the cup washers provides an ideal backing for gaskets and O‑rings, helping to create a reliable seal while preventing deformation of the sealing material.

What is the lead time for shipping after placing an order?

Orders are typically processed within 1‑2 business days, and standard shipping delivers the product within 3‑5 business days to most locations in the United States. Expedited shipping options are also available upon request.